Mathematics, 20.12.2019 03:31 ineedhelp2285
Among all monthly bills from a certain credit card company, the mean amount billed was $465 and the standard deviation was $300. in addition, for 15% of the bills, the amount billed was greater than $1000. a sample of 900 bills is drawn. what is the probability that the average amount billed on the sample bills is greater than $500? (round the final answer to four decimal places.)
Answers: 2
Mathematics, 21.06.2019 23:30
It takes an ant farm 3 days to consume 1/2 of an apple. at that rate, in how many days will the ant farm consume 3 apples
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Mathematics, 22.06.2019 02:30
Aresearch study is studying the effects of a new drug for osteoporosis alzheimer's disease (ad) for women above the age of 65 years. a group of individuals with osteoporosis is randomized into two groups. one group is treated conventionally, and the second group is treated with the new medication. assessments are made at 3, 6, 12, 36, and 48 months. the conventionally treated group is assessed for ad using a serum blood test, and the treatment group is assessed for ad using a pet radiotracer that binds to beta-amyloid plaques. in comparing these 2 trial arms, the authors of the study may encounter which type of bias? a. selection bias on the risk of developing b. measurement bias c. confounding bias d. recall bias e. lead-time bias
Answers: 2
Mathematics, 22.06.2019 05:30
The trapezoid below has been enlarged by a scale of 1.5. what is the area of the enlarged trapezoid?
Answers: 3
Among all monthly bills from a certain credit card company, the mean amount billed was $465 and the...
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